Opposed louver ventilator



y 3, 1950 H. M. PETERSON 2,509,016

OPPOSED LOUVER VENTILATOR Filed Jan. 10, 1947 INVENTOR HAROLD M. PETERSON ATTORNEY Patented May 23, 1950 OPPOSED LOUVER VENTILATOR Harold M. Peterson, Peoria Heights, 111:, assignor, by direct and mesne assignments, to Lester L.

Smith, Peoria, Ill.

Application January 10, 1947, Serial No. 721,265

3 Claims.

This invention relates to ventilators, and particularly to those adapted to use in walls, gables and the like where ventilation is to be provided along with protection from the elements, as well as insects and rodents. v

One of the objects of my present invention is to provide a ventilator adapted to manufacture from formed sheet material, such as sheet metal, in such a way that tool and manufacturing costs are kept low and the resultant ventilator gives relatively large ventilating area accompanied by ample weather protection.

As another object, my invention has within its purview the provision of a screened louver type of ventilator embodying double construction wherein similar louvers in inverted relationship overlie both sides of the ventilator openings and a screen is interposed between the louvered parts to cover the openings.

It is a further object of the invention to provide a louver type ventilator in which similarly louvered parts are placed together in inverted relationship with their openings aligned and wherein the edge portions of said parts form angularly disposed mounting flanges.

Other objects and advantages of the invention will be apparent from the following description and the accompanying drawings in which similar characters of reference indicate similar parts throughout the several views,

In the one sheet of drawings:

Figs. 1 and 2 are, respectively, front and rear elevational views of a ventilator embodying a preferred form of my present invention;

Fig. 3 is a sectional view of the ventilator wherein the section is taken substantially on a line 3-3 of Fig. 1 and in the direction indicated vide effective shielding protection for the ven-- tilator openings. That is, the ventilator has complementary external and internal louver protection for the air flow passages.

In the structure illustrated, the general shape of the ventilator is rectangular, although it is understood that it may be any of a variety of shapes so long'as certain relationships of parts are maintained and as will be more fully explained. A

generally plane rectangular sheet ill of deformable material, such as galvanized sheet metal,.

may be termed the outside sheet or ventilator plate since it is constructed and adapted to be mounted on the outer surface of a wall or the like.- Sirnilarly, another sheet I2 may be called the in side sheet or plate. The outside sheet ll] has a plurality of integrally formed louvers I3. For the rectangular construction depicted, the louvers I3 1 are all of the same size and shape and each has its longitudinal edges [4 and I5 disposed in substantially parallel relationship to edges l6 and ll of i the sheet.

The cut louver edges l 5 are preferably substantially straight as are the major portions of the bent edges It, with the metal of the louver surfaces formed outwardly and so shaped that the louvers have closed ends l8 and overlie their respective openings l9 in the sheet. The louvers are surrounded on the outside of the sheet by flat and coplanar marginal portions 20, 22, 23 and 24.

Also, the louvers are desirably spaced in a direction perpendicular to their straight longitudinal edges and have interposed therebetween fiat strips 25 which are coplanar with the marginal portions 2t, 22, 23 and 24.

In the outside sheet It, the louvers project outwardly and downwardly so that their respective openings are shielded from the top and front, as

well as at the ends, and open at the bottom. To

provide additional protection from the elements without materially lessening the area of the openings provided by the louvers l3 of the outside sheet, the inside sheet [2 has louvers 13' of similar size, construction, spacing and shape disposed in oppositely projecting, aligned and inverted relationship to the louvers l3. That is, the loui vers l3 and their respective longitudinal edges and inside sheets, it may be readily understood that the louvers l 3 and I3 of the two sheets may be formed by the same or like dies, which is a definite advantage from the manufacturing standpoint. that if the inside and outside sheets [0 and I2 a e be m d i some d f r n as. we a;

It may also be readily understood polygonal, circular or oval, it is only necessary that symmetry of louver sizes and shapes shall be maintained relative to a chosen center line parallel to the longitudinal edges of the louvers so that the louvers will be properly aligned in the two sheets when disposed in oppositely projecting a d inverted relationship to one another.

To facilitate both the manufacture and mounting of the ventilator, the outside and inside sheets l and I2 may be of the same size and shape originally, but to provide outside and ;inside mounting flanges 26 and .21, respectively, corner portions of the inside plate J2 are cut out and marginal portions 28, 29, 30 and '32 are folded inwardly at an angle to the general plane of the plate so as to extend into a mounting opening. Preferably, the sizes of the sheets are such that in addition to providing ample areas for the mounting flanges 26 and 21, marginal spaceis provided around the outside of the louvers of the sheet 12,.

To provide additional protection for the louver openings-a screen 33 of substantially the size of the plane surface-portion of the inside plate H is interposed between the sheets and [2 in their final assembly so as to lie betweenthe juxtaposed portions of the sheets and cover the louvered openings. For convenience and expedience of assembly, it is my preference to spotweld the two sheets and the screen together in assembled relationship at positions such as those indicated in Fig. 2. Desirably, the spotwelds are made at positions in the plane marginal portionsof the sheets, as indicated at 34, and also in the juxtaposed plane intermediate strips, as indicated at '35.

It may be readily appreciated from the disclosure of my ventilator-and its manner of manufacture and assembly that it has "both manufacturing and operational advantages. That is, the tools for manufacturing are relatively simple and the number of different tools and operations for a ventilator of a given design are minimized. In addition, and i'romthe standpoint of efiiciency and effectiveness in use, my ventilator not only V be made without departing from the spirit of the invention, and I do not wish to be limited to the precise details of construction set forth, but desire 'to avail myself of all changes within the scope of i the appended claims.

Having thus described my invention, what .I claim-as new and desire to secure by Letters Patent of the United States, is:

l. A ventilator comprising, in combination, a pair of rectangular metal sheets each having integr'a'lly formed louvers therein disposed with-at least one edge substantially parallel to one edge of the sheet, said louvers in thetwo sheets being of equal sizes and equally spaced apart in a direction transverse to the parallel edges thereof, one of said sheets having the margins thereof folded in the ,direction of projection of the louvers from the surface of the sheet, and substantially at rightang'lesito thegeneral plane of the 'sheet toprovide mounting flanges, a screen 4 of a size to cover the louvered surface of the last mentioned sheet, said sheets being secured together in face-to-face relationship with the screen interposed between them and with the louvers of the two sheets in inverted and subtantially al ne r onsh p so that t e louver openin s are shielded on both sides, and the margins of one of said sheets extending beyond said iolded margins of the other in the general plane of the sheet to provide second mounting flanges. 2. .A ventilator comprising, in combination, a pair of inetal sheets each having integrally formed ouvers t ere p v d p nin s and disposed yiththeiredges in substantially parallel relationship to one another, said louvers in the two sheets being of equal sizes and equally spaced apart in a direction transverse to the parallel edges thereof, said louvers also being so formed and spaced as to provide coplanar strips of sheet rnetal therebetween, one of said sheets having the margins thereof at an angle to the general plane of the sheet to provide mounting flanges, a screen of a size to cover the louvered surface of the last mentioned sheet, said sheets being secured together in iace-to-face relationship with the louvers on osite sides and the screen interposed between them, said louvers of the two sheets bei-ngin inverted relationship and saidcoplanar strips of sheet metal being juxtaposed on opposite sides oi-the screen so that the louver openings are shielded by the lonvers on 4 both sides of the ventilator, and the margins of one of said sheets extending beyond the folded edges of the other in the general plane of the sheet to provide additional mounting flanges.

-3. A ventilator comprising, in combination, a pair of metal sheets each having integrally formed louvers therein providing openings and disposed with edges substantially parallel to one another, said louvers in the two sheets being of equal sizes and equally-spaced apart in a direction transverse to the parallel edges thereof, said louvers also being so formed and spaced as to provide coplanar strips of sheet metal therebetween, one of said sheets having the margins thereof iolded in the direction of projection of the-louvers thereon and at an angle to the general plane of the sheet to provide mounting flanges, said sheets being secured together in face-to-face relationship with the louvers on the two sheets projecting from opposite -faces thereof and inverted relative to one another, the relative positions of the sheets also being such that said coplanar strips .'on the two sheets are in juxtaposed relationship so that the louver openings are-shielded by the =louvers on both sides of the ventilator, and the margins of one-of said sheets eietending beyond the-folded :edgesof the other in the general .plane of-the sheet to provide additional mounting flanges.

HAROLD M. PETERSON.

REFERENGE Q TE The following references are of record in the fileof this :patent:

UNITED spares PATENTS 

